Products Home自動水平調整機能付き除振システム、電子制御型
- Benchtop Vibration Isolation
- Active-Air Isolation with PID Control
- Electronic Control Box, No Mechanical Linkage
- Space-Saving Design
PWA090
Benchtop Isolation System
Typical Benchtop
Application
(Wires and Tubing
Not Shown)
Please Wait
| Key Specificationsa | |
|---|---|
| Vertical Resonant Frequency | ＜1.7 Hz |
| Horizontal Resonant Frequency | 7.0 Hz |
| Vertical Transmissibility at 10 Hz | -27 dB (95.66%) |
| Horizontal Transmissibility at 10 Hz | -4.5 dB |
| Maximum Load Capacity (Set of Four) | 462 lb (210 kg) |
特長
- 優れた除振性能: 10 Hzで垂直方向の伝達率が -27 dB
- 接触点無しの水平調整で除振性能が向上
- 3個の比例弁付きの制御ボックス
- 精密水平制御用PIDループ
- オイルフリーの設計でオイル漏れ無し
- 自立したベンチトップ型ソリューション
- 極めて低い共振周波数： ＜1.7 Hz
- 短い整定時間：1～5 s(典型値)
- 剛性の高いワークステーションのさらなる性能向上に適した製品
この電子制御型の自動水平調整機能付き除振システムPWA090は、持ち運びが簡単な軽量薄型の製品で、振動に敏感なベンチトップや実験に適した除振システムです。このシステムは、4個の空圧式除振装置およびキーパッド付き電子制御ボックスで構成されています。除振装置にはコンプレッサまたは空気タンクから常時空気を供給する必要があります。ご要望に合わせて除振動装置の数を変更してご提供することも可能ですので、ご相談ください。
右図の制御ボックス内には、3個のマスタ除振装置を制御する3個の比例弁があります。4個目の(スレイブ)除振装置は、3個のマスタ脚のうちの1個により制御されます。これらの弁は、PID制御ループが水平調整システムにフィードバックを送ることで制御されます。電子センサがあるため、ブレッドボードと弁の間に機械的な接触は必要ありません。これが既存のシステムと異なる点で、この装置では除振効率が向上しています。水平度/高さはキーパッドで手動調整で実現できます。システムが構築されて水平調整が完了すれば、その後は自動的に振動の影響が排除されて、水平度が保たれます。これらの電子制御型除振装置は小型で、直径はわずか110 mmで、高さは71 mmです。このように小型の製品であるため、ブレッドボードや小型の光学テーブルに適した製品となっています。
このシステムは、デスクやベンチトップなどの表面での使用に適します。一時的な除振効果が求められる場合や、除振装置を移動させる場合は、独立して使用することも可能です。逆にミリ規格のネジ穴のついた作業面にボルトで取り付けて、長期的に固定した構築物として使用することもできます。これらの除振装置は、PFRシリーズの固定式フレームのアップグレードに使用することも可能で、右図のようにアクティブ型の除振装置として使うこともできます。
これらの支柱内にある除振装置は、重要な周波数領域である3～50 Hzの範囲で、作業面に対する垂直/水平方向の振動の影響を効率的に排除します。この周波数範囲は、研究用途で一般的に最も多く存在する大振幅の振動です(光学テーブルのチュートリアルで「Sources of Vibration」の項目をご参照ください)。ブレッドボードからの振動は、空圧式除振システムで隔離できます。この独自の設計により、時間の経過と共に漏れや劣化が生じるオイルベースのダンピングシステムを使う必要はありません。ブレッドボード高さは空圧システムの圧力で決まりますが、その圧力は制御ボックスでコントロールされています。したがってこの支柱自身は制御ボックスでコントロールされています。ブレッドボードに垂直方向での変位があれば、制御ボックスが各除振装置の空圧を必要に応じて変化させて、ブレッドボードを元の高さに戻します。
注意
最適性能を発揮させるためには、当社ではこれらの支柱をNexus®シリーズブレッドボードと併用していただくことをお勧めしています。MBシリーズのブレッドボードにつきましては、当社までご相談ください。
| Specification | Value |
|---|---|
| Vertical Resonant Frequencya | ＜1.7 Hz |
| Horizontal Resonant Frequencya | ＜7.0 Hz |
| Vertical Transmissibility at Resonancea | 14.22 dB |
| Horizontal Transmissibility at Resonancea | 16.27 dB |
| Vertical Transmissibility at 10 Hza | -27 dB |
| Horizontal Transmissibility at 10 Hza | -4.5 dB |
| Load Capacityb | 30 kg (66 lbs) Min 210 kg (462 lbs) Max |
| Height | 73.50 - 76.0 mm (2.9" - 3.0 ") |
| Self-Leveling Repeatability | ±0.2 mm (0.008") |
| Adjustable Leveling Repeatability | ±0.2 mm to ±1.0 mm (±0.008" to ±0.04") |
| Average Settle Time for ±0.2 mm Repeatabilityc,d,e | 5.0 s |
| Average Settle Time for ±0.3 mm Repeatabilityc,d,f | ＜1.0 s |
| Settling Time for Large Disturbancesc,d,g | ＜60 s |
| Legs Height Adjustment Range | ±2.5 mm (0.1") |
| Air Pressure Required | 552kPa (80 psi) Max 138 kPa (20 psi) Min |
| Finish | Black Paint |
システムの振動や整定時間の長時間化を避けるには、取付け面の平坦度は4.0 mmの範囲内である必要があります。
光学テーブルの除振システムは、床からの衝撃振動に常時さらされます。これらの振動は、建物内の大型機械、風や交通によって引き起こされる建物の共振(揺れ)である場合もあります。伝達率とは、これらの振動を減衰する除振装置の効率を測定したもので、駆動振動の振幅に対する伝達振動の振幅比で定義されます。
重量に対する典型的な圧力設定
| Weight | Pressure | Min Isolator Separation |
|---|---|---|
| < 47 kg (103.4 lbs) | 20 psi | 400 mm |
| > 47 kg (103.4 lbs) to < 98 kg (215.6 lbs) | 40 psi | 400 mm |
| > 98 kg (215.6 lbs) to < 152 kg (334.4 lbs) | 60 psi | 600 mm |
| > 152 kg (334.4 lbs) to < 210 kg (462 lbs) | 80 psi | 900 mm |
| Posted Comments: | |
user
(posted 2023-08-31 22:44:08.457) Hello, I purchased a PWA090 this summer (order #S1755911) and installed it but when I received the box something was rattling inside the control unit. I tried setting it up and legs 1 & 3 work fine but leg 2 seems to be stuck open with no feedback and no air pressure going to the levelers. Can I return the PWA090 electronic control unit for a replacement/RMA? do'neill
(posted 2023-09-04 04:40:09.0) Response from Daniel at Thorlabs. I am sorry to hear this, I will reach out to you directly to see if I can help troubleshoot this issue with you. user
(posted 2022-05-10 16:06:17.643) Hi, Is it ok to use N2 instead of compressed air? We have direct supply of N2 through the outlets on the wall in our lab. We could get compressed air in bottles if necessary, but it might be convenient if N2 from the outlets can be used. cwright
(posted 2022-05-11 04:58:09.0) Response from Charles at Thorlabs: Thank you for your query. Yes you could use Nitrogen if you prefer as long as you meet the pressure requirements. We are aware that some customers have previously opted to do this. user
(posted 2022-01-07 11:04:26.457) Hello,
Is there a stud or threaded option for installing a custom frame to the isolators.
I do not see any threaded information for the 12mm diameter blind hole. Is there an option for having this hole threaded? Or is a threaded stud an option rather than the blind hole? cwright
(posted 2022-01-10 03:22:58.0) Response from Charles at Thorlabs: Thank you for your query. Unfortunately this is not currently an option for these isolators and they are only provided with this blind hole. Kevin Stephens
(posted 2021-07-26 14:52:52.71) Hello, I wanted to understand if it is possible to secure any length of the 1.5" posts to the top of this damper?
I would like to make a multi-level breadboard table with dampers and posts supporting the top table. cwright
(posted 2021-07-28 04:54:24.0) Response from Charles at Thorlabs: Thank you for your query. Unfortunately it is not possible to fit one of these posts to the PWA090 as there is no way to mate the components. The only hole in the surface is a 12 mm blind hole with no thread. We also would not recommend putting posts on these as any load would then likely be outside of the stability pyramid indicated in the manual. cwright
(posted 2021-07-28 04:54:24.0) Response from Charles at Thorlabs: Thank you for your query. Unfortunately it is not possible to fit one of these posts to the PWA090 as there is no way to mate the components. The only hole in the surface is a 12 mm blind hole with no thread. We also would not recommend putting posts on these as any load would then likely be outside of the stability pyramid indicated in the manual. Phuc Nguyen
(posted 2020-07-10 00:39:07.32) Hi, I had encounter the display for O is "999" with dynamic load on this system but It's Ok when reset system or ON/OFF levelling Active.
Furthermore Can I use the T-piece supplied, connect
the slave leg to one of the master legs at diagonal position?
Thank you. cwright
(posted 2020-07-10 04:30:19.0) Response from Charles at Thorlabs: Hello and thank you for contacting us about your application. "O" reaching a value of 999 would suggest that the valve has fully opened. There are a few potential causes for this, particularly if you have a changing load, so a member of our technical support team will reach out to you directly about this. Eugene Lee
(posted 2019-09-20 12:23:20.347) Hi, I had encounter the display for O is "999" then i think that is some internal error happening. Please help to advice, my hands are tight now. Thanks cwright
(posted 2019-09-20 12:09:14.0) Hello Eugene,
thank you for contacting us about this. I will contact you directly with follow-up questions to help identify the source of this problem. kdh5389
(posted 2019-01-04 03:03:49.15) Hello.
I have the Electronic Self-Leveling Isolation System.
I did using the system.
When I do testing, have a question.
What is the Settile point of control box?
And What is mean the "Vertical Transmissibility at 10 Hz -27 dB (95.66%)
Horizontal Transmissibility at 10 Hz -4.5 dB
" ?
Does this mean 95.66% vibration is transmitted or Does this mean that 95.66% vibration is compensated?
And -4.5dB is what percent?
Sorry,but i want know.
Thank you.
regard. AManickavasagam
(posted 2019-01-08 05:30:03.0) Response from Arunthathi @ Thorlabs: Thanks for your query. The settle position should be be close to zero as this is the mid travel position. The 95.66% is the suppression (percent lost) and the -4.5 db equates to 40.43% maheshswami
(posted 2017-11-02 02:54:38.91) Weather pump required for Air Pressure is included with the item. It wold be useful during purchase if a packing list is also available. bwood
(posted 2018-01-17 04:18:30.0) Response from Ben at Thorlabs: Thank you for your feedback. The PWA090 system does not include a pressurised air supply; you will need to use a compressor (e.g. PTA512), or a similar external air supply. I will pass on you comments about including a packing list in the manual. user
(posted 2013-02-15 04:54:11.397) How about add computer control port of driver? jlow
(posted 2013-02-18 12:00:00.0) Response from Jeremy at Thorlabs: A USB port was decided against because the PWA090 is meant to be a set-and-forget controller. Once it has been set up, you don’t really need to touch it. Therefore, a computer port would have added a fair amount of cost and complexity to the product. |
Additional ブレッドボード用支柱フレームおよび除振(防振)装置
 自動水平調整機能付き除振システム、電子制御型 |